Global Patent Index - EP 0162996 A1

EP 0162996 A1 19851204 - Lead-acid battery construction including improved means for oxygen recombination.

Title (en)

Lead-acid battery construction including improved means for oxygen recombination.

Title (de)

Sauerstoffrekombinationsvorrichtungen enthaltende Bleisäurebatteriekonstruktion.

Title (fr)

Construction de batterie au plomb-acide comportant des moyens de recombinaison d'oxygène.

Publication

EP 0162996 A1 19851204 (EN)

Application

EP 84850167 A 19840530

Priority

EP 84850167 A 19840530

Abstract (en)

A rechargeable lead-acid battery construction includes a combination of specially-constructed electrodes and separator materials which provides for improved oxygen recombination during charging while permitting the presence of an excess of operating electrolyte. Battery cells of this nature are self-regulating such that cell voltages during constant current charging are limited to approximately 2.38 volts. Several embodiments are disclosed, each having conventional positive (48, 54) and negative (56) "operating" electrode portions spaced apart by relatively thick, high resistance separator materials (64) and also including "oxygen-evolving" positive electrode portions (56) and thin, low-capacity "recombining" negative electrode portions (60) spaced apart by relatively thin, low-resistance separator materials (66). Electrode sets which provide cell voltage limitation and oxygen recombination and which may be added to otherwise conventional lead-acid battery cells are also disclosed.

IPC 1-7

H01M 10/34

IPC 8 full level

H01M 10/34 (2006.01); H01M 10/52 (2006.01)

CPC (source: EP)

H01M 10/342 (2013.01); H01M 10/52 (2013.01); Y02E 60/10 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE DE FR GB IT NL

DOCDB simple family (publication)

EP 0162996 A1 19851204

DOCDB simple family (application)

EP 84850167 A 19840530